From: Jonathan Cameron <jic23@cam.ac.uk>
To: michael.hennerich@analog.com
Cc: "linux-iio@vger.kernel.org" <linux-iio@vger.kernel.org>,
"device-drivers-devel@blackfin.uclinux.org"
<device-drivers-devel@blackfin.uclinux.org>,
Drivers <Drivers@analog.com>
Subject: Re: [PATCH 2/2] iio: adc: New driver for AD7280A Lithium Ion Battery Monitoring System
Date: Mon, 18 Jul 2011 14:41:54 +0100 [thread overview]
Message-ID: <4E243822.6020204@cam.ac.uk> (raw)
In-Reply-To: <4E2436E0.9060501@analog.com>
>>>>> +
>>>>> +static int ad7280_read_raw(struct iio_dev *dev_info,
>>>>> + struct iio_chan_spec const *chan,
>>>>> + int *val,
>>>>> + int *val2,
>>>>> + long m)
>>>>> +{
>>>>> + struct ad7280_state *st = iio_priv(dev_info);
>>>>> + unsigned int scale_uv;
>>>>> + int ret;
>>>>> +
>>>>> + switch (m) {
>>>>> + case 0:
>>>>> + mutex_lock(&dev_info->mlock);
>>>>> + switch (chan->type) {
>>>>> + case IIO_IN:
>>>>> + ret = ad7280_read_channel(st, chan->address>> 8,
>>>>> + chan->address& 0xFF);
>>>>> + break;
>>>>> + case IIO_IN_DIFF:
>>>>> + ret = ad7280_read_all_channels(st, st->scan_cnt, NULL);
>>>> Err... Really need some explanation for what this channel is!
>>> Voltage across all cells.
>> Fair enough. So are the other voltages not differential as well? (across a given
>> cell rather than referred to a base voltage)
>> ...
> Yes technically seen they are all differential.
>
Any cost in setting them up as such then?
in1-in0
in2-in1 etc
+
inX-in0 for your summed one?
next prev parent reply other threads:[~2011-07-18 13:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-15 12:59 [PATCH 1/2] iio: core: deconstify members of struct iio_chan_spec michael.hennerich
2011-07-15 12:59 ` [PATCH 2/2] iio: adc: New driver for AD7280A Lithium Ion Battery Monitoring System michael.hennerich
2011-07-18 11:43 ` Jonathan Cameron
2011-07-18 12:48 ` Michael Hennerich
2011-07-18 12:56 ` Jonathan Cameron
2011-07-18 13:36 ` Michael Hennerich
2011-07-18 13:41 ` Jonathan Cameron [this message]
2011-07-18 13:47 ` Michael Hennerich
2011-07-18 15:06 ` Michael Hennerich
2011-07-18 15:12 ` Jonathan Cameron
2011-07-15 13:19 ` [PATCH 1/2] iio: core: deconstify members of struct iio_chan_spec Jonathan Cameron
-- strict thread matches above, loose matches on Subject: below --
2011-07-20 13:03 michael.hennerich
2011-07-20 13:03 ` [PATCH 2/2] iio: adc: New driver for AD7280A Lithium Ion Battery Monitoring System michael.hennerich
2011-07-20 13:03 ` michael.hennerich
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